JVC RS4500 (native 4K laser projector)

[AVSCraig]

Alright, I am going to CES - quick day trip. Hopefully what happens in Vegas ( cold / flu germ wise ) stays in Vegas this time !   

[Pultzar]

I should be getting hold of one of these shortly after CES. I'm actually on a tight timeline to get the review done as they want it for the May projector issue of Sound and Vision. Here's hoping this thing lives up to the hype!!!

What screen will you be using?

[AVSMike]

There is a slight chance I might go after all, despite my getting sick last year at CES - for a month afterwards. I swore I wouldn't go this year. But with the RS4500 calling.............

Not slight. You are going.

[Kris Deering]

What screen will you be using?

120" diagonal Stewart Studiotek 100 (1.78:1). A bit small for this projector overall but it is what it is. I can't go taller, though I could go wider one day. But I have the biggest screen of all our writers, and arguably the most controlled environment for light (100% light controlled any time of day).

[Pultzar]

120" diagonal Stewart Studiotek 100 (1.78:1). A bit small for this projector overall but it is what it is. I can't go taller, though I could go wider one day. But I have the biggest screen of all our writers, and arguably the most controlled environment for light (100% light controlled any time of day).

Awesome!  I hope to take a peek at that combo as it's what I'm considering, although a little larger (6' tall)

[AVSCraig]

120" diagonal Stewart Studiotek 100 (1.78:1). A bit small for this projector overall but it is what it is. I can't go taller, though I could go wider one day. But I have the biggest screen of all our writers, and arguably the most controlled environment for light (100% light controlled any time of day).

I'm not sure that your screen is all that small for this projector. 3000 lumens always looks bright on paper. But, calibrate it, close the manual iris down for best native contrast, engage the color filter watching 4K UHD Blu Rays, and use 1/3 or 2/3rds power, and it seems to me to be on par brightness wise with the RS600. But with a killer lans and native 4K ( among other things ). 

[Kris Deering]

I'm not sure that your screen is all that small for this projector. 3000 lumens always looks bright on paper. But, calibrate it, close the manual iris down for best native contrast, engage the color filter watching 4K UHD Blu Rays, and use 1/3 or 2/3rds power, and it seems to me to be on par brightness wise with the RS600. But with a killer lans and native 4K ( among other things ).

That's what I'm hoping for. With the 600 I have the projector in low lamp with the iris one click away from being stopped all the way down. With the 4500 I'm hoping I can run low laser with the iris all the way stopped down and achieve the same brightness with no issue. Same for when I'm running the filter for WCG. It should also make it where I can achieve a reasonable brightness for HDR without going into a high mode, hopefully med power with an aggressive iris, but we'll see.

[AVSCraig]

How many foot lamberts are you getting Kris ? On my 122" 1.78:1 Cima Neve, I'm currently at -6 or 7 clicks on my iris ( and auto 1 ) which seems just right brightness wise with Blu Ray. With 280 or so hours on the lamp, I'm around 15 foot lamberts with those settings. I was originally around 18 foot lamberts at -8 / auto 1 with a brand new lamp. If I can get an RS4500, I might be happy with -15 clicks on 2/3rd's power.

[AVSCraig]

Sure hope they have a full production unit with the bugs worked out next week at CES !

[Kris Deering]

How many foot lamberts are you getting Kris ? On my 122" 1.78:1 Cima Neve, I'm currently at -6 or 7 clicks on my iris ( and auto 1 ) which seems just right brightness wise with Blu Ray. With 280 or so hours on the lamp, I'm around 15 foot lamberts with those settings. I was originally around 18 foot lamberts at -8 / auto 1 with a brand new lamp. If I can get an RS4500, I might be happy with -15 clicks on 2/3rd's power.

With one click away from max iris closed I am at about 16-17 fL. If I go that one extra click it drops to like 9! Eesh! My lamp has close to 500 hours now I think, I'd have to look. Rock solid light engine so far. I've actually been thinking about going through and doing a full touch up on all my video calibrations but with the 4500 coming soon and some work travel in between then and now, seems like a lot of work for what would amount to maybe watching 2-3 movies before I'm installing the 4500.

[AVSMike]

I am really interested to see what HDR looks like on a screen like Kris's, when using the RS4500.

[Kris Deering]

I am really interested to see what HDR looks like on a screen like Kris's, when using the RS4500.

I'm only a flight away Mike! 

[AVSCraig]

Have to see if it looks better than on the RS600. Might depend on the actual movie.

[Pultzar]

Kris do you have a computer that can output a 4K signal?  If not I might be able to bring something over.  I know that most people here probably don't use their HT as a computer screen (I DO!) but I find it to be the ultimate torture test for sharpness and uniformity.

[AVSCraig]

With one click away from max iris closed I am at about 16-17 fL. If I go that one extra click it drops to like 9! Eesh! My lamp has close to 500 hours now I think, I'd have to look. Rock solid light engine so far. I've actually been thinking about going through and doing a full touch up on all my video calibrations but with the 4500 coming soon and some work travel in between then and now, seems like a lot of work for what would amount to maybe watching 2-3 movies before I'm installing the 4500.

Are you sure you are in low lamp ? I can't close the iris down that far and still have 16 - 17 foot lamberts, except maybe in high lamp. But black levels sure look good. I'm interested to see what dynamic laser dimming brings to the party !